Hides award emoji & access level on system notes

What does this MR do?

Hides award emoji & access level on system notes as they aren't applicable to them notes.

Screenshots (if relevant)

app/views/projects/notes/_note.html.haml

@@ -18,9 +18,9 @@
             = time_ago_with_tooltip(note.created_at, placement: 'bottom', html_class: 'note-created-ago')
         .note-actions
           - access = note.project.team.human_max_access(note.author.id)
-          - if access
+          - if access and not note.system
             %span.note-role.hidden-xs= access
-          - if current_user
+          - if current_user and not note.system
             = link_to '#', title: 'Award Emoji', class: 'note-action-button note-emoji-button js-add-award js-note-emoji', data: { position: 'right' } do
               = icon('spinner spin')
               = icon('smile-o')